package com.datareport.data.security;

import cn.hutool.json.JSONUtil;
import com.datareport.data.Utils.JwtUtils;
import com.datareport.data.dto.ResultDTO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class LoginSuccessHandler implements AuthenticationSuccessHandler {
   @Autowired
   JwtUtils jwtUtils;

   @Override
   public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
      response.setContentType("application/json;charset=UTF-8");
      ServletOutputStream outputStream = response.getOutputStream();


      /**生成jwt返回
       * jwtUtils.getHeader():jwtUtils工具类里的一个属性，值为String类型的字符串'Authorization'
       * 这里把jwt作为请求头返回去，名称就叫做Authorization
       */
      String jwt = jwtUtils.generateToken(authentication.getName());
      response.setHeader(jwtUtils.getHeader(), jwt);

      ResultDTO result = ResultDTO.okOf();
      outputStream.write(JSONUtil.toJsonStr(result).getBytes("UTF-8"));
      outputStream.flush();
      outputStream.close();
   }
}